CVR-API

Free open source API for looking up Danish companies in the Central Business Register — including an MCP server for AI assistants

Get started with CVR-API

Access comprehensive CVR data via REST API or connect your AI assistant using MCP

Try the API

Search by company name or enter a CVR number directly

Lightning Fast

Get CVR data in milliseconds with our optimized REST API

Open Source

Completely free and transparent source code on GitHub

Reliable

Accurate data sourced directly from the CVR register

AI-Ready

MCP server for Claude, ChatGPT and other AI assistants

MCP Server for AI Assistants

Use CVR-API directly from Claude, ChatGPT and other AI assistants via the Model Context Protocol (MCP). Give your AI access to live CVR data — search for companies, retrieve contact details and much more.

https://mcp.apicvr.dk/mcp
lookup_company
Look up company by CVR number
search_company_by_name
Search company by name
search_company_fuzzy
Fuzzy search by name
search_company_by_email
Find company by email
search_company_by_phone
Find company by phone
search_company_by_address
Find companies by address
search_company_by_email_domain
Find companies by domain
View setup instructions

Important: Advertising Protection Notice

All users of CVR-API must comply with the advertising protection rules under Danish CVR law.

Companies may opt out of advertising contact. As a user you commit to:

  • Respecting companies' wishes regarding advertising protection
  • Not using information about advertising-protected companies or production units for direct marketing, including phone calls, targeted mailings and similar activities
  • Clearly marking when passing data to third parties that a company or production unit is protected

These obligations follow from CVR Act § 19 and § 22. Violation of these rules may result in legal consequences.

Reference usage: By using CVR-API you agree that we may identify your organisation as a user of this API — based on the referring domain observed in our analytics — and use your name or logo as a reference on this website and in related marketing materials. If you wish to opt out, contact us.